Doctor Who fans are pretty focused right now on “The Day of the Doctor,” the 50th anniversary special set to air Nov. 23 on BBC America (and in select theaters). But the milestone will be bookended with a pair of equally significant presentations.

Matt Smith’s successor on Doctor Who will be familiar to longtime fans of the show and its spinoffs: Peter Capaldi played the head of a Pompeii household rescued by David Tennant’s Doctor in Series 4, and he also played tormented UK government official John Frobisher in Torchwood: Children of Earth.